According to the legend Tara is an emanation of Chenrezi, the Bodhisattva of Compassion. Once when Chenrezi was very moved by the suffereing of all sentient being, he shed two tears. The tear from his right eye turned into the green form of Tara and the tear from his left eye turned into the white form.
Green Tara is adorned in silken garments and jeweled ornaments. The main difference on the iconography between the green Tara and the white Tara is the position of the legs. Green Tara sits in a posture of ease, with one leg drawn towards her and the other resting on a lotus bud that springs from the pedestal. Her hands are in the mudra of perfect generosity, holding the stems of blue lotus showing a peaceful and smiling expression.